I have a regular problem with the altitude assignments from ATC. If I am told to fly at 5000' for example I am constantly told to fly 5000' and scolded even though I am flying that. Also the same for 11000 and 12000.Becoming really annoying that I have to keep pressing F7 to accept and then repeating the process several times.EDIT : After reading another post regarding same issue it looks like I need to manually set the Altimeter rather than press 'B'.Also had a prob with flying a route from FSNav. Flying with LNAV on FMC (PMDG 737) heading 160. Then for no reason ATC said I was way off my heading and vectored me for 320 which would have taken me back the way I came. I was flying the correct heading (EGCC to France LFPG!). I ended up requesting a direct fix that I was already flying to just so I could keep the ATC.I am using FSUIPC 3.52 registeredAny ideas please? Seems to affect all my routes.Many thanksGraham

"B" only works when the transition level/pca is 180 (18000). if the transition level is less (ie in every other country on earth), then you have to manually set the altimeter to 29.92, when you hear "altimeter check"if rc is telling you to fly 180 degrees opposite of your plan, you have missed a checkpoint. you have to fly the headings rc gives you, until you hear "resume own navigation"and then when rc gives you headings to fly in vector holds, or emergencies, or in approach, you have to do what rc says, not what the box in the cockpit saysjd

Hi Graham,First, listen very carefully to whether you are assigned an altitude or a flight level.If RC tells you to fly at a Flight Level (for example Flight Level 50) your altimeter should be set to standard (29.92 inches, 1013.2 HPa)If RC tells you to fly at an altitude (5000 feet) your altimeter should be set to local pressure (QNH)Below 18000 feet pressing B will always set the local pressure.All the best,John